Real-time procedural volumetric fire

Fuller, Alfred R.; Krishnan, Hari; Mahrous, Karim Magdi; Hamann, Bernd; Joy, Kenneth I.

doi:10.1145/1230100.1230131

Cited by 18 publications

(15 citation statements)

References 6 publications

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“…For example, for editing fire animations, methods (e.g., [8,14]) have been presented to enable the user to deform the fire via a curve representing its route. Pighin et al [17] proposed a method for editing simulated flow fields via advected radial basis functions.…”

Section: Model Reductionmentioning

confidence: 99%

“…For example, one may use procedural methods to deform the flow fields [8,14], or may directly deform the density fields. Although these approaches allow for generating various stylized animations without the need for repeatedly running the simulations, the results are typically not guaranteed to satisfy the physical conservation laws; violating the mass conservation can easily lead to noticeable visible artifacts such as increasing/decreasing fluid mass.…”

Section: Introductionmentioning

confidence: 99%

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Incompressibility-preserving deformation for fluid flows using vector potentials

Sato¹,

Dobashi

Yue

et al. 2015

Vis Comput

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Physically based fluid simulations usually require expensive computation cost for creating realistic animations. We present a technique that allows the user to create various fluid animations from an input fluid animation sequence, without the need for repeatedly performing simulations. Our system allows the user to deform the flow field in order to edit the overall fluid behavior. In order to maintain plausible physical behavior, we ensure the incompressibility to guarantee the mass conservation. We use a vector potential for representing the flow fields to realize such incompressibility-preserving deformations. Our method first computes (time-varying) vector potentials from the input velocity field sequence. Then, the user deforms the vector potential, and the system computes the deformed velocity field by taking the curl operator on the vector potential. The incompressibility is thus obtained by construction. We show various examples to demonstrate the usefulness of our method. Electronic supplementary materialThe online version of this article (

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Section: Model Reductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Incompressibility-preserving deformation for fluid flows using vector potentials

Sato¹,

Dobashi

Yue

et al. 2015

Vis Comput

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“…Kim et al proposed a path based control method for 3D smoke simulation, in which animators could specify a 3D NURBS path for smoke [16]. [17] present a method for generating procedural volumetric fire through curve-based volumetric deformation and Perlin Noise. On the other hand, a group of control methods have also been developed to match target shapes directly.…”

Section: Related Workmentioning

confidence: 99%

A Geometric Control of Fire Motion Editing

Feng

Zhu

Wang

2015

2015 International Conference on Virtual Reality and Visualization (ICVRV)

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In this paper, we present a control technique to editing the fire motion with the geometry goal shape, which is designed without connection to physical parameters and physical equation solving. To fulfill this, controlling elements are extracted from the input curves conveying the target shape of fire animation. Then a force field is obtained according to these controlling elements, which would drive the fire towards the target shape. Moreover, to optimize the particles' position, a geometric topology model is proposed to maintain the visual details while generating the fire motion under the external force field frame by frame. Experimental results show that our method can generate desirable fire shape under simple interaction.

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“…For example, curve-based methods for creating various fire animations have been proposed [Lamorlette and Foster 2002;Fuller et al 2007]. These methods generate user-designed fire animations by deforming a curve representing the route of the fire.…”

Section: Related Workmentioning

confidence: 99%

“…Some procedural methods have also been proposed for creating various animations by deforming the flow fields [Lamorlette and Foster 2002;Fuller et al 2007]. Although these methods can create desired animations efficiently, the resulting flow field is not physically-correct, making the animations less realistic than those created using physicallybased simulation.…”

Section: Introductionmentioning

confidence: 99%

Deformation of 2D flow fields using stream functions

Sato

Dobashi

Iwasaki

et al. 2014

SIGGRAPH Asia 2014 Technical Briefs

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Recently, visual simulation of fluids has become an important element in many applications, such as movies and computer games. These fluid animations are usually created by physically-based fluid simulation. However, the simulation often requires very expensive computational cost for creating realistic fluid animations. Therefore, when the user tries to create various fluid animations, he or she must execute fluid simulation repeatedly, which requires a prohibitive computational time. To address this problem, this paper proposes a method for deforming velocity fields of fluids while preserving the divergence-free condition. In this paper, we focus on grid-based 2D fluid simulations. Our system allows the user to interactively create various fluid animations from a single set of velocity fields generated by the fluid simulation. In a preprocess, our method converts the input velocity fields into scalar fields representing the stream functions. At run-time, the user deforms the grid representing the scalar stream functions and the deformed velocity fields are then obtained by applying a curl operator to the deformed scalar stream functions. The velocity fields obtained by this process naturally perseveres the divergence-free condition. For the deformation of the grid, we use a method based on Moving Least Squares. The usefulness of our method is demonstrated by several examples.

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Real-time procedural volumetric fire

Cited by 18 publications

References 6 publications

Incompressibility-preserving deformation for fluid flows using vector potentials

Incompressibility-preserving deformation for fluid flows using vector potentials

A Geometric Control of Fire Motion Editing

Deformation of 2D flow fields using stream functions

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